Perhaps you should try some spelling variations:
van dinh » van minh, van dich, va dinh
su sach » so sach, vu sach
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
cau duc » cau luc, chu duc, cau truc
sach ty » sach y, sach tu, sach thu
cao duc » dao duc, cao suc, giao duc
di cua » dai cua, doi cua, de cua
vi cua » vai cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty xang xa hoi. hieu va ((cau duc) OR (cao duc)) van dinh ((vi cua) or (di cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. hieu va ((cau duc) OR (cao duc)) van dinh ((vi cua) OR (di cua)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang xa hoi. hieu va ((cau duc) OR (cao duc)) van dinh ((vi cua) or (di cua)) te*".